If you can't see what you project then your blinders are on way too tight. I will explain. You use the word "substantial" and judge me by it. You said "Then you failed in finding a substantial difference" but the word "substantial" only has value when you are measuring according to a particular continuum and standard. For it to make sense to you, you must be using your own standard. Thus, when you tell me I have failed, you are replacing a transcendent and objective standard (if it exists) with your particular use of the word "substantial." When I covered this many years ago, in grad school, we called it "unconscious projection" -- like walking into a room and saying "it is hot in here" when others might not be hot, because you assume that your statement of "I am hot in this room" can be projected onto everyone else. I have seen this also called complementary projection.
After you study a little bit and can substantiate your claims, we can certainly continue to discuss.